Thanks! I'd forgotten the app name, and also was silly enough not to check first post

Originally Posted by Wazmo

Which app?
http://openaltimeter.org/downloads.html
https://play.google.com/store/apps/d...Timer&hl=en_US

Thanks for posting but please note, the openaltimeter link is for the standard openaltimeter. The downloads for this one are in the first post of this thread.

Getting these errors trying to flash from 5 to 6.1
Connected.
Flashing altimeter firmware ...
avrdude: stk500_getsync(): not in sync: resp=0xe2
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x84

avrdude done. Thank you.

avrdude failed with exit code: 1
Error flashing firmware.

On a Mac 10.13.6

Any help appreciated, yes, I'm getting my planes ready, been gone for a while

Are you sure you are using a data cable? Some are just charge cables.

I was able to download some data so I assume it is a data cable, but an earlier version of the downloader (v5) wouldn't connect at all, so maybe not. I'll check further.

I have one of these I bought a few years ago and never used. If anyone wants one PM me an offer.

Ditto!